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Related Experiment Video

Updated: Apr 16, 2026

Tracking Infiltration Front Depth Using Time-lapse Multi-offset Gathers Collected with Array Antenna Ground Penetrating Radar
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Drone's Angle-of-Arrival Estimation Using a Switched-Beam Antenna and Single-Channel Receiver.

Sumin Han1, Byung-Jun Jang1

  • 1Department of Electrical Engineering, Kookmin University, Seoul 02707, Republic of Korea.

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Summary

This study introduces a novel method for estimating the Angle-of-Arrival (AoA) of drone signals using a single receiver and switched-beam antenna. The system achieves accurate drone tracking with an average error under 5°, enabling low-cost anti-drone solutions.

Keywords:
angle-of-arrival (AoA)anti-drone sensorssingle receiversoftware-defined radio (SDR)switched-beam antenna (SBA)unmanned aerial vehicles (UAVs)

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Area of Science:

  • Electrical Engineering
  • Signal Processing
  • Aerospace Engineering

Background:

  • Drone surveillance and security are growing concerns.
  • Accurate tracking of drone signals is crucial for effective countermeasures.
  • Existing methods often require complex multi-antenna arrays or synchronization.

Purpose of the Study:

  • To develop a cost-effective, single-receiver system for estimating the Angle-of-Arrival (AoA) of OFDM drone signals.
  • To enable precise drone localization using wideband and burst signal characteristics.
  • To provide a foundation for compact and portable anti-drone systems.

Main Methods:

  • Utilizing six circularly arranged directional antennas controlled via RF switches for time-division power measurement.
  • Synthesizing antenna power measurements and beam patterns into a vector form.
  • Determining the AoA from the direction of the synthesized vector.

Main Results:

  • Experimental validation using a DJI Phantom 4 Pro video signal (10 MHz bandwidth).
  • Achieved stable Angle-of-Arrival estimation with an average error of less than 5 degrees.
  • Demonstrated successful AoA estimation without receiver synchronization.

Conclusions:

  • The proposed single-receiver, switched-beam antenna system effectively estimates drone signal AoA.
  • The method offers a low-cost, compact, and portable solution for anti-drone applications.
  • This technology facilitates enhanced drone detection and tracking capabilities.